UTUK, N. M.; EKANEM, A.; ABASIATTAI, A. M. Timing and reasons for antenatal care booking among women in a tertiary health care center in Southern Nigeria. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, [S. l.], v. 6, n. 9, p. 3731–3736, 2017. DOI: 10.18203/2320-1770.ijrcog20174016. Disponível em: https://www.ijrcog.org/index.php/ijrcog/article/view/3225. Acesso em: 2 oct. 2025.